Fellow Series 1 Black Knock Boxes this cap fits perfectly on

this cap fits perfectly on Aeropress Orginal

Coffee oils and residue can build up in your grinder

*Also suitable for all filter methods

With a USB-C rechargeable electric vacuum pump built into the lid

The slotted bar inserts and removes easily for cleaning

Fellow Series 1 Black Knock Boxes this cap fits perfectly onA precision driven espresso machine built to deliver professional level performance at home. It stabilizes temperature, pressure, and flow to produce consistent, repeatable shots without constant adjustment. Whether youre dialing in a new recipe or pulling the same shot every day, Series 1 delivers the control experts expect and the confidence beginners need.